Indonesia's National Search and Rescue Agency (Basarnas) said the two black boxes from Sriwijaya Air Flight 182 are believed have been detected within 150 to 200 metres of the crash site and that search and rescue operations are continuing around the clock.
The head of Indonesia's National Transportation Safety Commission, Suryanto Cahyono told CNN that they had located two different locations for the Cockpit Voice Recorder (CVR) and Flight Data Recorder (FDR) from Sriwijaya Air Flight 182.
He said that both the CVR and FDR - which are known as black boxes - are transmitting intermittent ping signals to a receiver that can 'detect and locate the black boxes.'
The Commander of the Indonesian National Armed Forces, Marshal Hadi Tjahjanto, said he hoped to retrieve the devices soon from the seabed, 23 metres below the surface.
the Sriwijaya Air plane - a Boeing 737-500 - was heading from Jakarta to the city of Pontianak, on the Indonesian side of Borneo, when it lost contact at 2:40 pm local time, 11 nautical miles north of Jakarta's Soekarno-Hatta International Airport.
Four minutes into the flight, and amid heavy rains, the plane dropped 10,000 feet in less than a minute before disappearing from the radar, according to the global flight tracking service Flightradar24.
National Transportation Safety Board USA has assigned Michael Hauff, their accredited aircraft crash expert, to fly to Indonesia to investigate.